General
| Property | Value | Comment |
|---|---|---|
Water absorption | 4.78 % Show Material materials with Water absorption of 4.78 % | for 54h to boiling water |
Mechanical
| Property | Value | Comment |
|---|---|---|
Elastic modulus | 3.9 GPa Show Material materials with Elastic modulus of 3.9 GPa | ASTM D638 |
Plane-Strain Fracture Toughnes | 0.78 MPa·√m Show Material materials with Plane-Strain Fracture Toughnes of 0.78 MPa·√m | ASTM D5045 |
Tensile strength | 82.0 MPa Show Material materials with Tensile strength of 82.0 MPa | ASTM D638 |
Thermal
| Property | Value | Comment |
|---|---|---|
Coefficient of thermal expansion | 1.5e-06 1/K Show Material materials with Coefficient of thermal expansion of 1.5e-06 1/K | ASTM E831 |
Glass transition temperature | 270.0 °C Show Material materials with Glass transition temperature of 270.0 °C | ASTM E2092 |
Max service temperature | 250.0 °C Show Material materials with Max service temperature of 250.0 °C |
Rheological Properties
| Property | Temperature | Value |
|---|---|---|
Viscosity | 100 °C | 0.2 Pa·s Show Material materials with Viscosity of 0.2 Pa·s |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Composite tooling: ITECMA composite tooling materials combines low CTE index with extreme lightness | |
| Processing methods | Assemble the vacuum bag. Perform a leak test, the rate of the vacuum drop should not be more than 1 mbar per minute. The residual pressure in the bag must not be more than 10 mbar. Assemble the second vacuum bag, put airweave material between the layers of the vacuum film. Perform a leak test for the second vacuum bag. The residual pressure in the bag must not be more than 10 mbar. Degas for 20-30 minutes, at 100-120°C, at a pressure of no more than 10 mbar. During the degassing, the resin should be stirred intensively. It is also recommended to dry the reinforcing material in a vacuum bag for at least 6 hours. • Heat the mold up to 100-110°C (in case of complex geometry or unidirectional parts, it is possible to increase the temperature of the tooling to 120°C). • Maintaining the temperature of the mold 100-110°C and the temperature of resin dispenser at 100°C, start the infusion process. After complete impregnation of the bag, close the resin inputs, but continue evacuation from the inner bag for at least 30 minutes. Close the outputs from the inner bag. Maintain the outer vacuum bag until the end of curing process. Increase the temperature at a rate of 2°C/min to 160°C. Dwell at 160°C for 3 hours ; heat to 190°C at a rate of 2°C/min; dwell at 190°C for 3 hours. It is possible to heat up to 190°C without exposure at 160°C, in the case that the auxiliary materials and mold materials withstand such conditions. Before removing the part, cool the mold to at least 90°C at a speed of no more than 5°C/min. Post-cure can be performed without mold. Heat to 180°C at a rate of 2°C/min, from 180°C to 230°C, heat to 190°C at a rate of 0.5°C/min; dwell 5 hours at 230°C. Do not cool faster than 5°C/min. It is recommended to use a quasi-isotropic layouts for tooling. The recommended thickness of the tooling is not less than 5mm. Particular attention should be given to the stiffeners. For the measurement of vacuum, the use of absolute pressure sensors is recommended. | |